/Engine/Plugins/Interchange/Runtime/Source/Nodes/Public/InterchangeVariantSetNode.h
Get the payload key needed to retrieve the variants for this VariantSet.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Interchange | Node | VariantSet") bool GetCustomVariantsPayloadKey ( [FString](API\Runtime\Core\Containers\FString) & PayloadKey ) const